Natwest has pulled a feature on its banking app that lets users get cash without a bank card. The removal of "Get Cash" from the app comes two days after reports that a fraudster used the feature to "get cash" - from another person's account.

The BBC reported that a Natwest customer had been diddled out of £900 through a thief abusing the cardless cash helpline. The Observer had a tale from a guy who lost £1500 the same way. One victim hadn't even signed up for mobile banking, though both did bank online.

Natwest says that the removal of the mobile feature days after these stories is coincidence and down to planned maintenance.

Get cash: though preferably your own, not other people's

Get Cash was introduced to Natwest's mobile banking app in June and is intended to help people get cash from their account in emergencies. By phoning a number accessible through the mobile app, and answering some security questions, customers get a six figure PIN number delivered to the app.

Entering the PIN into an ATM belonging to Natwest, RBS or Tescos lets the customers take out amounts of cash between £10 and £100 without a card. In the BBC story, the thief did this at least nine times over three days to take out the £900 he filched.

Natwest has said that an updated version of the service would be out next week at the earliest, and confirmed that this would have new security features, though stressed this was all routine security work:

The updates we're making are with regards to how they have seen seen customers using the app. Some of those will be security enhancements.

We believe this could include a lower limit on the amount that can be withdrawn through Get Cash.

According to a Natwest spokesperson it was likely that the fraud victim interviewed on the BBC's Moneybox programme had given out his details to phishers which is how his account got hijacked.

Natwest would only say this on record:

The GetCash feature of the RBS and NatWest mobile app is temporarily unavailable to customers as a result of a planned update.